PHYSICAL PROPERTIES OF METALS Have you ever seen a blacksmith beating an iron piece or an article made up of iron, like a spade, a shovel, an axe? Do you find a change in the shape of these article
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PHYSICAL PROPERTIES OF NON METALS In contrast, materials like coal and sulphur are soft and dull in appearance. They break down into a powdery mass on tapping with a hammer. They are not sonorous a
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